Surname Rayh (Rayh 
, Раых 
) , around the world, is a rare last name. The cognomen Rayh is characteristic of Bulgaria, where it is a rare surname, Morocco, and Algeria, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Morocco, India, and Bulgaria. Much less frequently, Rayh is the forename as well as the last name.